ADD JobService and UploadService

src/main/java/com/ddf/vodsystem/services/UploadService.java

@@ -0,0 +1,56 @@
+package com.ddf.vodsystem.services;
+
+import com.ddf.vodsystem.entities.Job;
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.util.Base64;
+import java.util.UUID;
+
+@Service
+public class UploadService {
+    private static final String UPLOAD_DIR = "videos/";
+
+    private JobService jobService;
+
+    public UploadService(JobService jobService) {
+        this.jobService = jobService;
+    }
+
+    public String upload(MultipartFile file) {
+        // generate uuid, file
+        String uuid = generateShortUUID();
+        File uploadDir = new File(UPLOAD_DIR + uuid + ".mp4");
+        moveToFile(file, uploadDir);
+
+        // add job
+        Job job = new Job(uuid, uploadDir);
+        jobService.addJob(job);
+
+        return uuid;
+    }
+
+    private void moveToFile(MultipartFile inputFile, File outputFile) {
+        try {
+            Path filePath = Paths.get(outputFile.getAbsolutePath());
+            Files.copy(inputFile.getInputStream(), filePath, StandardCopyOption.REPLACE_EXISTING);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static String generateShortUUID() {
+        UUID uuid = UUID.randomUUID();
+        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
+        bb.putLong(uuid.getMostSignificantBits());
+        bb.putLong(uuid.getLeastSignificantBits());
+        return Base64.getUrlEncoder().withoutPadding().encodeToString(bb.array());
+    }
+}